They can read anything in their user’s inbox. So if you sent it to a gmail user it’s fair game.

I challenge this answer: this quote is a slight rewording of another author’s paraphrasing of the original quotation, which differs considerably enough to not be considered a match. Unfortunately, Google results are not the end authority here: we need citations to original source material – this ‘quote’ is certainly misattributed to Schopenhauer repeatedly on-line, but as all very well know by now, the web is replete with copy/paste of questionable material with nice eye appeal.

Here is the original quote from Schopenhauer: “Das Talent gleicht dem Schützen, der ein Ziel trifft, welches die übrigen nicht erreichen können; das Genie dem, der eins trifft, bis zu welchem sie nicht einmal zu sehen vermögen.” [“Die Welt als Wille und Vorstellung” II, 3 – “The World as Will and Imagination” Vol. II, Ch. III, para. 31 (On Genius), 1844], which translates approximately as: “The talent is like the marksman who hits a target which the rest cannot reach; the genius hits one which they cannot even see.”
This quotation has been rephrased multiple times, and on-line searches will typically produce one of those retellings. The quote you provide is a slight alteration of a paraphrased translation of the original Schopenhauer quote by Ludwig von Bertalanffy [“Problems of Life” 1952]: “The task is, not so much to see what no one has yet seen, but to think what nobody has yet thought, about that which everybody sees.”
I prefer the more concise rewording of this by Albert Szent-Györgyi [“Bioenergetics” Part II: Biological structures and functions, p. 57, Academic Press 1957]: “Research is to see what everybody has seen and think what nobody has thought.”
This was intended to be my high school yearbook quote (1981), but the editor made an egregious error which ruined the meaning, and puzzles people to this day when they look through my old yearbook (‘everybody’ repeated in place of ‘nobody’). That is why I am so familiar with this source material, and why I am responding now.

I’d love to get off Gmail and stop feeding Big Brother. Sure, easyMail would be my first choice. However, what has held me back for years is not whether it’s free, it’s that (1) they got the UI and workflow right, and (2) their many-to-many label model is not available in IMAP’s one-to-many folder structure.

Does your easyMail IMAP have a way out of the one-to-many folder model?